Guillamon or Guillamón may refer to:
Guillamon Island, Highland, Scotland Costa y Guillamón, La Paz, Canelones Department, Uruguay
People Hugo Guillamón (born 2000), Spanish professional footballer Antoine Guillamon (born 1991), French rugby union player Juan Carlos Guillamón (born 1974), Spanish cyclist Julià Guillamon (born 1962), Spanish writer and literary critic Vicente Alejandro Guillamón (born 1930), Spanish journalist and writer